Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 19 Dec 2018 03:51:36 +0100
From: Adam Zabrocki <>
Subject: Re: insmod: ERROR: could not insert module p_lkrg.ko:
 No buffer space available

On Tue, Dec 18, 2018 at 09:03:44PM +0100, bryn1u85 wrote:
> hey guys,
> I recompiled kernel to kernel-4.19.10. After that im trying to run lkrg but
> im getting errors like below:
> [root@...alhost output]# insmod p_lkrg.ko
> insmod: ERROR: could not insert module p_lkrg.ko: No buffer space available
> [root@...alhost output]#
> [   97.954081] p_lkrg: loading out-of-tree module taints kernel.
> [   97.954346] p_lkrg: module verification failed: signature and/or
> required key missing - tainting kernel
> [   97.955845] [p_lkrg] Loading LKRG...
> [   97.990086] [p_lkrg] Can't initialize exploit detection features!
> Exiting...
> [root@...alhost output]#
> What can i do in this situation ?
> Thanks !


I believe you've already asked the same question a few times.
Alexander replied to you here:

Additionally, that can be useful for you too:

In short:

"For the future reference, if you would like to know why LKRG fails 
initialization you can try this simple scenario: 
LKRG module has a parameter p_init_log_level which defines default log_level 
which is going to be used during initialization. You can read more about 
log_level option (and in general about communication channel) here: 

In short it might be a number between 0-4 or 0-6 (if debugging compilation was 
used). If LKRG fails initialization I'm suggesting to use at least 
number 4 for this parameter (e.g. # insmod p_lkrg.ko p_init_log_level=4). It 
will give more information about the root of the problem. If debug option is 
enabled number 5 and 6 is also available but you need to be carefully using it 
to not spam the kernel with too many logs."


pi3 (pi3ki31ny) - pi3 (at) itsec pl

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.